As a die-hard "Mad Men" fan, I would argue there is no "worst episode." Although, if you're going to rank each episode, something has to have the lowest score -- even if it's not particularly low. On IMDb, just like with movies or entire television series, you can rate individual episodes on a scale of 1-10, and the ratings are then aggregated, with the overall score based on the median. Taking all the scores for every episode, the lowest-rated episode of "Mad Men" ends up being "Ladies Room," which is only the second episode of the first season, receiving a 7.5 rating based on 4.3K votes.

I'm surprised it's not an episode from one of the later seasons, especially season six where Don Draper's "Dante's Inferno"-like hell of repeating bad habits becomes somewhat tedious to watch. What, exactly, disconnects viewers from "Ladies Room"? Perhaps it seems underwhelming after following up on one of the best pilots of all time, "Smoke Gets in Your Eyes," which introduced us to the handsome, discerning ad man Don Draper. There's one unforgettable moment after another, from Don summing consumerism and advertising as a balm for happiness to the gobsmacking ending when he returns home from boozing, smoking, and West Village trysts to his doting wife and sleeping children. Still, there's a lot of merit to "Ladies Room" -- especially for a second episode -- that makes its 'worst episode' label seem too harsh.